Crosslinked xylose-based polyester as a bio-derived and degradable solid polymer electrolyte for Li+-ion conduction

Matthew Oshinowo, James Runge, Marco Piccini, Frank Marken, Antoine Buchard

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11 Citations (SciVal)


A novel crosslinked polyester derived from d-xylose and 10-undecenoic acid (from castor oil) has been investigated as a new material for solid polymer electrolyte (SPE) applications. Acyclic diene metathesis polymerisation of a bio-derived monomer, followed by crosslinking with 2,2-(ethylenedioxy)diethanethiol (to impart film properties and mechanical strength) and incorporation of lithium bis(trifluoromethanesulfonyl)imide (LiTFSI), resulted in flexible and transparent SPE films. The materials exhibited T g's between −25 °C and 13 °C and thermal stability up to 234 °C. Ionic conductivity was measured as a function of molar mass, crosslinking density and salt molarity which were optimised to achieve an ionic conductivity as high as 1.0 × 10 −5 S cm −1 at 60 °C. A high lithium transference number of 0.84 was also achieved and electrochemical stability up to 3.88 V was demonstrated. Revealing 33% of the xylofuranose core OH groups via ketal deprotection resulted in a semi-crystalline polymer whose crystallinity was disrupted by incorporation of LiTFSI. The resulting SPE material offered a small, yet non-significant, improvement of ionic conductivity (3.5 × 10 −5 S cm −1vs. 1.0 × 10 −5 S cm −1 at 60 °C).

Original languageEnglish
Pages (from-to) 6796-6808
Number of pages13
JournalJournal of Materials Chemistry A
Issue number12
Early online date25 Feb 2022
Publication statusPublished - 28 Mar 2022

Bibliographical note

Funding Information:
We thank Dr Georgina Gregory for useful discussions. Analytical facilities were provided through the Material and Chemical Characterisation Facility (MC) at the University of Bath. Research funding from the Engineering and Physical Sciences Research Council (DTP studentship to JRR, EP/L016354/1 CDT in Sustainable Chemical Technologies Studentship to MP), the University of Bath (studentship to MO), and the Royal Society (UF/160021 fellowship to AB) is also acknowledged. 2

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)


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